Hublot Spirit of Big Bang Magic Sapphire 42 MM - Black Rubber Strap - Sapphire Crystal Dial - 642.JX.0170.RX

The HUB4700 caliber is the successor to the famous El Primero caliber - the first chronograph with an integrated style automatic winding (1969), which was also the first mechanical chronograph equipped with a 5 Hz frequency (36’000 alt/h) allowing an accuracy of 1/10th of a second. In a perfect fusion between tradition and innovation, this entirely skeletonized movement is now equipped with silicon regulating element ensuring avant-garde performances, precision and reliability. Black Structured Lined Rubber Straps. Sapphire Crystal Dial.